The human ATG4Dgene encodes the proteinAutophagy related 4D, cysteine peptidase.[1]
Function
Autophagy is the process by which endogenous proteins and damaged organelles are destroyed intracellularly. Autophagy is postulated to be essential for cell homeostasis and cell remodeling during differentiation, metamorphosis, non-apoptotic cell death, and aging. Reduced levels of autophagy have been described in some malignant tumors, and a role for autophagy in controlling the unregulated cell growth linked to cancer has been proposed.
This gene belongs to the autophagy-related protein 4 (Atg4) family of C54 endopeptidases. Members of this family encode proteins that play a role in the biogenesis of autophagosomes, which sequester the cytosol and organelles for degradation by lysosomes. Alternative splicing results in multiple transcript variants. [provided by RefSeq, Jul 2013].
Mariño G, Uría JA, Puente XS, Quesada V, Bordallo J, López-Otín C (February 2003). "Human autophagins, a family of cysteine proteinases potentially implicated in cell degradation by autophagy". The Journal of Biological Chemistry. 278 (6): 3671–8. doi:10.1074/jbc.M208247200. PMID12446702.